STLED325 datasheet(7/62 Pages) STMICROELECTRONICS

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STLED325

Description

Doc ID 17576 Rev 1

7/62

Description

The STLED325 is a compact LED controller/driver that interfaces microprocessors to LED

displays through serial I2C interface. It drives LED connected in common anode con-

figuration. The STLED325 drives up to 40 discrete LEDs in 8 segment/5 digit configuration

while functioning from a supply voltage of 5 V. The maximum segment current for the display

digits is set through a single external resistor. Individual digits may be addressed and

updated without rewriting the entire display. Additionally it includes keyscanning for an 8 x 2

key matrix which automatically scans and de-bounces a matrix of up to 16 switches.

Furthermore, it provides standby power management to the host. The STLED325 also

integrates a low-power, highly-accurate RTC and a remote-control decoder. All functions are

pro-grammable using the I2C bus. Low power consumption during standby mode is

achieved. STLED325 supports numeric-type displays and reduces the overall BOM costs

through high integration. Also it provides ESD protection of greater than 2 kV HBM.

The LED controller/driver is ideal as a single peripheral device to interface the front panel

display with a single-chip Host IC like CPU.

STLED325 数据表(PDF) 7 Page - STMicroelectronics